// Protocol Buffers for GWT
// Copyright 2010 Thomas Broyer  All rights reserved.
// http://code.google.com/p/protobuf-gwt/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

package net.ltgt.gwt.protobuf.compiler;

import com.google.protobuf.Descriptors.MethodDescriptor;
import com.google.protobuf.Descriptors.ServiceDescriptor;
import com.google.protobuf.compiler.JavaHelpers;


import java.io.IOException;
import java.io.Writer;

/**
 * @author t.broyer@ltgt.net Thomas Broyer
 * Based on the initial work of:
 * @author kenton@google.com Kenton Varda
 * Based on original Protocol Buffers design by
 * Sanjay Ghemawat, Jeff Dean, and others.
 */
public class ServiceEmulGenerator extends AbstractServiceGenerator {

  public ServiceEmulGenerator(ServiceDescriptor descriptor) {
    super(descriptor);
  }

  @Override
  protected void generateDescriptor(Writer output) throws IOException {
    if (JavaHelpers.hasDescriptorMethods(descriptor)) {
      output.write("public static final class Descriptor extends com.google.protobuf.Descriptors.ServiceDescriptor {\n");
      output.write("  public static final com.google.protobuf.Descriptors.ServiceDescriptor INSTANCE = new Descriptor();\n");
      output.write("\n");
      output.write("  private Descriptor() { }\n");
      output.write("\n");
      output.write("  public com.google.protobuf.Descriptors.FileDescriptor getFile() {\n");
      output.write("    return " + JavaHelpers.getClassName(descriptor.getFile()) + ".getDescriptor();\n");
      output.write("  }\n");
      output.write("\n");
      output.write("  public int getIndex() { return " + descriptor.getIndex()
          + "; }\n");
      output.write("  public String getName() { return \"" + descriptor.getName()
          + "\"; }\n");
      output.write("  public String getFullName() { return \""
          + descriptor.getFullName() + "\"; }\n");
      output.write("  protected com.google.protobuf.Descriptors.MethodDescriptor[] createMethods() {\n");
      output.write("    return new com.google.protobuf.Descriptors.MethodDescriptor[] {\n");
      for (MethodDescriptor method : descriptor.getMethods()) {
        output.write("      new com.google.protobuf.Descriptors.MethodDescriptor(\""
            + method.getName() + "\", " + method.getIndex() + ", this) {\n");
        output.write("        public com.google.protobuf.Descriptors.Descriptor getInputType() {\n");
        output.write("          return "
            + JavaHelpers.getClassName(method.getInputType())
            + ".getDescriptor();\n");
        output.write("        }\n");
        output.write("        public com.google.protobuf.Descriptors.Descriptor getOutputType() {\n");
        output.write("          return "
            + JavaHelpers.getClassName(method.getOutputType())
            + ".getDescriptor();\n");
        output.write("        }\n");
        output.write("      }\n");
      }
      output.write("    };\n");
      output.write("  }\n");
      output.write("}\n");
    }
  }
}
